This book highlights the environmental issues, an assessment of environmental risks within the borders of Northeast Asia and neighboring territories. This book pays special attention to the transboundary factor as the main factor in international and interregional cooperation. This book develops methods of complex, thematic, interpretative mapping, geoinformation modeling, processing of remote sensing data for geographical and environmental studies, models for the analysis of spatial and temporal geographic data, and their long series. The book is planned to widely cover economic, physical-geographical and environmental studies, including the analysis of natural resources from the state of the natural environment and resource potential to its change under the influence of various factors.